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Can anyone ID this propeller?


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blackhawkdown

I am unsure if this propeller is military or not, it’s about 93” tip to tip and variable pitch. Any ideas?I am not sure where to post to ask.

B29D271E-5B34-48C5-A826-FA2788BED2DA.jpeg

43CFF21B-D8F7-4786-B015-17703CE67440.jpeg

43D5FCB8-4167-4121-9EC6-4EC988321780.jpeg

1573F5F4-298E-4178-9536-BF4E32B58D2D.jpeg

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M1Garandy

Any markings on the hub itself? Something like 2B20, 2D30, 12D40 or similar? 

 

Blades are likely marked, but may not be visible without disassembly. It has been 20+ years since I had an HS counterweight prop apart, I can't 100% remember at this point.

 

Could be AT-6/SNJ, BT-13, Twin Beech, OS2U Kingfisher or any number of civvy models but it is hard to nail it down for sure without a model number to compare to the Type Certificate Data Sheet or other manual. 

 

 

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TheCrustyBosun
55 minutes ago, M1Garandy said:

Any markings on the hub itself? Something like 2B20, 2D30, 12D40 or similar? 

 

Blades are likely marked, but may not be visible without disassembly. It has been 20+ years since I had an HS counterweight prop apart, I can't 100% remember at this point.

 

Could be AT-6/SNJ, BT-13, Twin Beech, OS2U Kingfisher or any number of civvy models but it is hard to nail it down for sure without a model number to compare to the Type Certificate Data Sheet or other manual. 

 

 

That’s the same list of planes that first came to my mind too. 
 

Nice prop. It would look nice on the wall!

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2B20 for a Cessna UC-78. Where the counterweight arm contacts the cylinder, all the larger counterweight props had a bearing. The 2B20-200 series just had a bronze bushing pressed into the cylinder and that can be seen in your photo. The counterweight arm wears the bushing badly so the 2B20-300 series had a steel bushing with a bronze washer that could rotate and act like a bearing.

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